PRODUCTION OF HEAT. 



43 



DISCHARGE OF HEAT. 



(1) Warming Water in Food. . . . 2 '6 kilo. X 25 = 65'Cals. 



(2) ,, Air .... 16 kilo. X 25 X o'26 = 104 ,, 



(3) Evaporation in Lungs 630 at 582 = 367 ,, 



(4) Radiation and Evaporation at Surface . . . . = 1964 ,, 



2500 Cals. 



The mean temperature of the body is remarkably con- 

 stant, but is higher in the central than in the superficial 

 parts. The uniformity of temperature is dependent on 

 the constant equilibrium of the two processes by which 

 severally heat is produced and discharged. 



